/* ======================================= */
/* SIN·COS·TAN CALCULATOR                  */
/* ======================================= */

:root {
  --card-bg: #0d1117;
  --secondary-bg: #161b22;
  --border-color: #30363d;
  --text-color: #e6edf3;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --accent-purple: #9333ea;
  --accent-purple-dark: #7e22ce;
  --accent-blue: #2563eb;
  --overlay-dark: #161b22;
  --overlay-medium: #1c2128;
  --border-dark: #30363d;
  --button-reset-bg: #6c757d;
  --button-reset-hover: #5a6268;
}

.trig-calculator-card {
  max-width: 100%;
  margin: 0 auto;
  padding: 35px;
  background: linear-gradient(
    145deg,
    var(--card-bg) 0%,
    var(--secondary-bg) 100%
  );
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  color: var(--text-color);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.trig-calculator-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--accent-purple),
    var(--accent-blue),
    var(--accent-purple)
  );
  background-size: 200% 100%;
  animation: trigGradientShift 3s ease infinite;
}

@keyframes trigGradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.trig-calculator-card h1 {
  color: var(--text-primary);
  font-size: 2rem;
  margin-bottom: 8px;
  text-align: center;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.trig-calculator-card-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 25px;
  font-weight: 400;
}

/* Mode selector */
.trig-calculator-card-selector {
  display: flex;
  gap: 0;
  margin-bottom: 25px;
  background: var(--overlay-dark);
  border-radius: 12px;
  padding: 4px;
  border: 1px solid var(--border-dark);
}

.trig-calculator-card-mode-btn {
  flex: 1;
  padding: 14px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.trig-calculator-card-mode-btn:hover {
  color: var(--text-primary);
  background: var(--overlay-medium);
}

.trig-calculator-card-mode-btn.active {
  background: linear-gradient(
    135deg,
    var(--accent-purple) 0%,
    var(--accent-purple-dark) 100%
  );
  color: white;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

/* Layout */
.trig-calculator-card-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}

.trig-calculator-card-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Inputs */
.trig-calculator-card-inputs {
  background: var(--overlay-medium);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
}

.trig-calculator-card-input-group {
  margin-bottom: 20px;
}

.trig-calculator-card-input-group:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-input-group label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--accent-purple);
  font-size: 0.95rem;
}

/* Input wrapper with arrow controls */
.trig-calculator-card-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--overlay-dark);
  border: 2px solid var(--border-dark);
  border-radius: 12px;
  overflow: hidden;
  height: 56px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.trig-calculator-card-input-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.2);
}

.trig-calculator-card-input-group input[type="number"],
.trig-calculator-card-input-group select {
  flex-grow: 1;
  border: none;
  background: transparent;
  text-align: center;
  font-size: 1.1rem;
  padding: 0 15px;
  height: 100%;
  color: var(--text-primary);
  font-weight: 600;
  box-sizing: border-box;
}

.trig-calculator-card-input-group input[type="number"]:focus,
.trig-calculator-card-input-group select:focus {
  outline: none;
}

.trig-calculator-card-input-group select {
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: var(--overlay-dark);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 40px;
  color-scheme: dark;
}

.trig-calculator-card-input-group select option {
  background-color: #0d1117;
  color: #e6edf3;
  padding: 10px;
}

.trig-calculator-card-input-group input[type="number"]::-webkit-inner-spin-button,
.trig-calculator-card-input-group input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.trig-calculator-card-input-group input[type="number"] {
  -moz-appearance: textfield;
}

.trig-calculator-card-input-group input[type="number"]::placeholder {
  color: var(--text-secondary);
  opacity: 0.5;
}

/* Slider */
.trig-calculator-card-slider-container {
  display: flex;
  align-items: center;
  gap: 15px;
}

.trig-calculator-card-slider {
  flex: 1;
  height: 8px;
  border-radius: 5px;
  background: var(--overlay-dark);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.trig-calculator-card-slider::-webkit-slider-track {
  width: 100%;
  height: 8px;
  background: linear-gradient(to right, var(--accent-purple), var(--accent-blue));
  border-radius: 5px;
}

.trig-calculator-card-slider::-moz-range-track {
  width: 100%;
  height: 8px;
  background: linear-gradient(to right, var(--accent-purple), var(--accent-blue));
  border-radius: 5px;
}

.trig-calculator-card-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.trig-calculator-card-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.trig-calculator-card-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.5);
}

.trig-calculator-card-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.5);
}

.trig-calculator-card-slider-value {
  width: 80px;
  padding: 12px;
  background: var(--overlay-dark);
  border: 2px solid var(--border-dark);
  border-radius: 8px;
  text-align: center;
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  transition: all 0.3s ease;
}

.trig-calculator-card-slider-value:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.2);
}

.trig-calculator-card-slider-value::-webkit-inner-spin-button,
.trig-calculator-card-slider-value::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.trig-calculator-card-slider-value {
  -moz-appearance: textfield;
}

/* Actions */
.trig-calculator-card-actions {
  display: flex;
  gap: 12px;
}

.trig-calculator-card-btn {
  padding: 14px 20px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.trig-calculator-card-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.trig-calculator-card-btn:hover::before {
  width: 300px;
  height: 300px;
}

.trig-calculator-card-btn-icon {
  font-size: 1.1rem;
}

.trig-calculator-card-btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-purple) 0%,
    var(--accent-purple-dark) 100%
  );
  color: white;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.trig-calculator-card-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(147, 51, 234, 0.6);
}

.trig-calculator-card-btn-primary:active {
  transform: translateY(0);
}

.trig-calculator-card-btn-secondary {
  background: linear-gradient(
    135deg,
    var(--button-reset-bg) 0%,
    var(--button-reset-hover) 100%
  );
  color: white;
  box-shadow: 0 4px 15px rgba(108, 117, 125, 0.4);
}

.trig-calculator-card-btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 117, 125, 0.6);
}

/* Error */
.trig-calculator-card-error {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  padding: 14px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  display: none;
  animation: trigShake 0.5s;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.trig-calculator-card-error.show {
  display: block;
}

@keyframes trigShake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

/* Result */
.trig-calculator-card-result {
  background: linear-gradient(135deg, var(--accent-purple) 0%, #764ba2 100%);
  color: white;
  padding: 24px;
  border-radius: 12px;
  display: none;
  animation: trigFadeIn 0.5s ease-out;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.trig-calculator-card-result.show {
  display: block;
}

.trig-calculator-card-result h3 {
  margin: 0 0 12px 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.trig-calculator-card-result-value {
  font-size: 2rem;
  font-weight: 700;
  margin: 12px 0;
  font-family: "Courier New", monospace;
}

.trig-calculator-card-result p {
  font-size: 0.95rem;
  opacity: 0.9;
  margin: 0;
}

@keyframes trigFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Formula */
.trig-calculator-card-formula {
  background: var(--overlay-dark);
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
  border-left: 4px solid var(--accent-purple);
}

.trig-calculator-card-formula h3 {
  color: var(--accent-purple);
  margin: 0 0 12px 0;
  font-size: 1rem;
  font-weight: 600;
}

.trig-calculator-card-formula-item {
  color: var(--text-color);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 8px;
}

.trig-calculator-card-formula-item:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-formula-item strong {
  color: var(--accent-purple);
}

/* Triangle Legend */
.trig-calculator-card-triangle {
  background: var(--overlay-medium);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
}

.trig-calculator-card-triangle h3 {
  color: var(--accent-purple);
  margin: 0 0 16px 0;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
}

.trig-calculator-card-canvas-container {
  background: linear-gradient(135deg, #1a1f2e 0%, #2d3548 100%);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.trig-calculator-card-canvas-container canvas {
  max-width: 100%;
  border-radius: 8px;
}

.trig-calculator-card-legend-labels {
  text-align: center;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.trig-calculator-card-legend-side {
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.trig-calculator-card-legend-side.over {
  color: #58a6ff;
}

.trig-calculator-card-legend-side.aan {
  color: #7da2ff;
}

.trig-calculator-card-legend-side.schuin {
  color: #6a0dad;
}

/* Visualization */
.trig-calculator-card-visualization {
  background: var(--overlay-medium);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
}

.trig-calculator-card-visualization h3 {
  color: var(--accent-purple);
  margin: 0 0 16px 0;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
}

.trig-calculator-card-circle-container {
  background: linear-gradient(135deg, #1a1f2e 0%, #2d3548 100%);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 440px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.trig-calculator-card-circle-container canvas {
  max-width: 100%;
  border-radius: 8px;
}

/* Info box */
.trig-calculator-card-info {
  background: rgba(33, 150, 243, 0.1);
  border-left: 4px solid #2196f3;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid rgba(33, 150, 243, 0.2);
}

.trig-calculator-card-info h3 {
  color: #2196f3;
  margin: 0 0 12px 0;
  font-size: 1rem;
  font-weight: 600;
}

.trig-calculator-card-info p {
  color: var(--text-color);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 10px 0;
}

.trig-calculator-card-info p:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-info em {
  color: var(--accent-purple);
  font-style: italic;
}

.trig-calculator-card-info ul {
  margin: 8px 0 0 0;
  padding-left: 20px;
}

.trig-calculator-card-info li {
  margin-bottom: 6px;
  line-height: 1.6;
}

.trig-calculator-card-info li:last-child {
  margin-bottom: 0;
}

/* Tip box */
.trig-calculator-card-tip {
  background: rgba(255, 193, 7, 0.1);
  border-left: 4px solid #ffc107;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 193, 7, 0.2);
}

.trig-calculator-card-tip h3 {
  color: #ffc107;
  margin: 0 0 12px 0;
  font-size: 1rem;
  font-weight: 600;
}

.trig-calculator-card-tip ul {
  margin: 0;
  padding-left: 20px;
  list-style: none;
}

.trig-calculator-card-tip li {
  color: var(--text-color);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 10px;
  position: relative;
  padding-left: 0;
}

.trig-calculator-card-tip li:last-child {
  margin-bottom: 0;
}

.trig-calculator-card-tip li::before {
  content: "→";
  color: #ffc107;
  font-weight: bold;
  position: absolute;
  left: -20px;
}

.trig-calculator-card-tip em {
  color: #ffc107;
  font-style: italic;
}

/* Responsive */
@media (max-width: 968px) {
  .trig-calculator-card-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .trig-calculator-card {
    padding: 20px 12px;
    border-radius: 16px;
  }

  .trig-calculator-card h1 {
    font-size: 1.5rem;
  }

  .trig-calculator-card-subtitle {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .trig-calculator-card-selector {
    flex-direction: column;
    gap: 0;
  }

  .trig-calculator-card-mode-btn {
    font-size: 0.85rem;
    padding: 12px 16px;
  }

  .trig-calculator-card-actions {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .trig-calculator-card-btn {
    padding: 12px 16px;
    font-size: 0.9rem;
  }

  .trig-calculator-card-result-value {
    font-size: 1.6rem;
  }

  .trig-calculator-card-canvas-container {
    min-height: 250px;
    padding: 15px;
  }

  .trig-calculator-card-circle-container {
    min-height: 350px;
    padding: 15px;
  }

  .trig-calculator-card-input-wrapper {
    height: 50px;
  }
}

@media (max-width: 375px) {
  .trig-calculator-card {
    padding: 16px 10px;
  }

  .trig-calculator-card h1 {
    font-size: 1.3rem;
  }

  .trig-calculator-card-subtitle {
    font-size: 0.8rem;
  }

  .trig-calculator-card-result-value {
    font-size: 1.4rem;
  }
}